You will be given a definition of a task first, then some input of the task.
In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

In economics , crowding out is a phenomenon that occurs when increased government involvement in a sector of the market economy substantially affects the remainder of the market , either on the supply or demand side of the market .
Output:
In economics , crowding out happens when the government starts buying or selling more stuff in the market .